Hi!
Thanks for your answer, Coolio10...
So I just did a clean install of the .276 version (uninstalled the previous version, rebooted, made a registry clean-up, installed the new version), then I deleted the windows updater entries in firewall and defense+ (as mentioned elsewhere in the forum), and.... still no ICS (but file sharing still works)

Any other idea? Which rules and applications are important for the ICS?
By the way: before I had the 2.4 version and ICS was working. But I hate the idea of going back to an older version...
Alexandra